CN100340743C - Exhaust steam line for steam plants - Google Patents
Exhaust steam line for steam plants Download PDFInfo
- Publication number
- CN100340743C CN100340743C CNB2004100009290A CN200410000929A CN100340743C CN 100340743 C CN100340743 C CN 100340743C CN B2004100009290 A CNB2004100009290 A CN B2004100009290A CN 200410000929 A CN200410000929 A CN 200410000929A CN 100340743 C CN100340743 C CN 100340743C
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- steam discharge
- line
- discharge
- path
- blow
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000005494 condensation Effects 0.000 abstract 1
- 238000009833 condensation Methods 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/06—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using air or other gas as the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B1/00—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser
- F28B1/02—Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser using water or other liquid as the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/02—Auxiliary systems, arrangements, or devices for feeding steam or vapour to condensers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S261/00—Gas and liquid contact apparatus
- Y10S261/76—Steam
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8376—Combined
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/85938—Non-valved flow dividers
Abstract
The invention relates to an exhaust steam line for steam plants comprising several. Said steam line comprises a main steam line (10) to which at least two distributing pipes (6) leading to a condensation element are connected. The cross section of the main steam line (10) becomes smaller from a connection point (7) of a bifurcating line (6). The invention is characterised in that the main steam line (10) is arranged at an angle (W), in relation to the horizontal (H), which rises in the direction of flow of the waste steam.
Description
Technical field
The invention relates to the steam discharge discharge pipe of apparatus of steam power plants, the steam discharge discharge pipe of particularly relevant apparatus of steam power plants with steam turbine.
Background technique
The steam discharge discharge pipe of apparatus of steam power plants, above steam turbine, its effect is with steam discharge exhaust steam turbo machine, that is to say, steam discharge in each parts that condense is crossed main steam discharge discharge pipe to by-path from turbo machine cylinder back warp, realizes relative maximum vacuum at last.The diameter of the pipe of the discharging steam discharge of air cooled condenser is generally between 1 meter to 10 meters.
Have local flow velocity loss in exhaust steam pipe, this is that perhaps the variation of flow direction causes because the flow cross section changes in those places.Though common exhaust steam pipe diminishes by different level in the cross section with steam discharge by-path tie point, work as the loss that still has pressure when steam discharge flows through at the opening of by-path.According to the standard of DE-PS 1945314, at the interconnective jointing of by-path, can guarantee certain sealing by two pipes are plugged together mutually, realize minimum loss of pressure with this.Difference between the pipe is to distinguish by their diameter, and small tubes can be inserted in the bigger in the past ring, and the steam discharge by-path can be covered by bigger pipeline radially in the joint like this.The shortcoming of this executive mode is to drop to minimum to the loss of pressure.Basically, when the direction of steam discharge discharging changes, just have the loss of flow velocity in the joint.Follow flow velocity loss and what come is the pressure loss, this is that length by pipeline causes.
Near the ground of main pipe level process corresponding length must be arranged, keep for upwardly extending steam discharge by-path.Here, horizontally extending main pipe should be installed overhead higher a little, and each steam discharge by-path can be lacked like this.Because can predict the turning that two an angle of 90 degrees must be arranged at least in main blow-off line inside, therefore can reduce resistance coefficient in right-angle elbow pipe by guide vane is installed.Do like this, can produce very big loading on the one hand---between 7 to 20 tons, can improve the cost of installation on the one hand in addition.
Summary of the invention
The objective of the invention is to disclose a kind of steam discharge discharge pipe of apparatus of steam power plants, it can realize reducing the expense on installation and material, also will realize the loss of pressure is dropped to minimum level simultaneously.
This invention is these difficult problems that solve existing steam discharge discharge pipe by following technical proposals, that is: the blow-off line of the steam power plant of a plurality of special air-cooled condensers, a main blow-off line arranged, at least connect two steam discharge by-paths on main blow-off line, they are connected with condenser element separately.In this blow-off line, the cross section of main blow-off line with the tie point that is connected of steam discharge by-path after, the cross section of pipeline diminishes, and that is to say, forms an acclivitous bent angle between the substantially horizontal that main blow-off line and steam discharge flow.The core of invention is by main steam discharge discharge pipe being placed to the angle of level, so that winner's steam discharge discharge pipe can extend along the direction that steam discharge flows.
The basic concept of this new pipe laying meets such principle, promptly as much as possible at that the main steam discharge discharge pipe on the lower height with directly coupling together than the numerous steam discharge by-paths on minute steam discharge by-path on the higher height.The main steam discharge discharge pipe that extends according to this method has an advantage, although that is exactly the length difference of every steam discharge by-path, their length is all short than the length that is connected with a complete horizontally extending main steam discharge discharge pipe.Therefore the distance of gas flow also shortens like this.
Can reduce because do the raw material that need like this, so the quality requirement of blow-off line also can reduce, and can save cost of material and mounting cost.In addition, mounting cost also obtains in other places saving, and has shortened because those combine the steam discharge by-path that forms by ring-shaped member one by one, has therefore also reduced a large amount of welding jobs.The minimizing of the weight of overall assembling makes operation also become easily.At last, because the load-bearing of pedestal has diminished, therefore can be with smaller pedestal.
Compare with the sort of mode that rectangular shape between main steam discharge discharge pipe and the steam discharge by-path is connected, the advantage of this invention outbalance is to have reduced the loss of pressure by the loss that reduces flow velocity.Loss of pressure is to become certain proportionate relationship with resistance coefficient in the pipe-line system.Resistance coefficient is by the quantity of right angle bend and structure to a certain extent, and branching of pipes decides.Resistance coefficient can reduce by creationary main steam discharge discharge pipe inclination is installed on the interconnective interface of steam discharge by-path.On principle, crooked angle is more little, and resistance coefficient is also just more little.Crooked angle is meant the angle between the cross section of the cross section of main steam discharge discharge pipe and steam discharge by-path.If these two cross sections are parallel, so Wan Qu angle is exactly 0 degree.According to the installation method of this invention, exactly the bend angle of 90 degree are generally speaking reduced as far as possible, so just can make resistance coefficient between each steam discharge by-path and the main steam discharge discharge pipe be lower than in angle is resistance coefficient under 90 situations about spending.In general, the loss in the blow-off line has just significantly reduced under the situation of the i.e. loss of pressure compared with the right angle installation.
Other a advantage is that main blow-off line relatively upwards improves from the lower height of steam turbine.Like this and the angle angle between the horizontal plane just greater than 0 the degree and less than 90 the degree between, such as 5 spend to 60 the degree between.The angle of this angle preferably can be spent in the scope of 20 degree 10.Because bigger angle angle has a shortcoming, if big in the resistance coefficient comparison of the zone of transition of the cross section that tilts from the cross section of the level of main blow-off line to main blow-off line will just produce bigger loss of pressure so in early.Smaller to the angle angle, when especially angle was less than 10 degree, the loss of pressure was lacked a lot than the bend pipe of general employed 90 degree.If abandoned those extra flow guide devices, for example the guide vane bend pipe can be simplified widely but adopt in this creationary main blow-off line construction.Say that further the effect of better cooling for reflux is arranged with the opposite direction of flow of steam in the main blow-off line.
Selecting the angle of angle is to decide according to the length of main blow-off line and every situation of equipment.Key wherein is because changed the height of main blow-off line, therefore can predict the bent angle that can not occur 90 degree in whole pipe again, but all angles all to be far smaller than 90 degree.
The most basic a kind of mode is exactly that steam discharge by-path and main blow-off line are upwards arranged obliquely according to the direction of steam discharge discharging, have at least a steam discharge by-path to be connected with main blow-off line, between the bent angle of several angle is arranged, main blow-off line is to be tilted to along the direction of gas flow.In other words, the end of steam discharge by-path upper end with it be connected the cross section not on same vertical surface.According to this arrangement mode, the flow velocity loss that makes each connect on the cross section is reduced again.
Can predict, the direction of arranging at the least significant end place of main blow-off line steam discharge by-path is the same with main blow-off line, and especially have superiority this time." same orientation " is meant that in this invention main blow-off line is parallel with the steam discharge by-path, perhaps overlaps with the steam discharge by-path at the major axis place of main blow-off line.It is that level by the last condenser element of steam turbine decides with vertical distance that this make makes the winner's blow-off line and the angle of horizontal plane.Because main blow-off line does not have angle between least significant end and steam discharge by-path, main blow-off line just can be shorter relatively.Therefore, though the last steam discharge by-path of installing is longer a little, this arranging method has still reduced whole weight in general.
The blow-off line of this invention also has other mounting type, and just a steam discharge by-path is divided into two subtubes at least, and so, the steam discharge by the steam discharge by-path also will flow into two subtubes, flows to separately then in the middle of the condenser.The steam discharge by-path is divided into two subtubes according to certain geometry rule, rather than increases a steam discharge by-path that directly is connected with main blow-off line again.By increasing by two or more branch for the steam discharge by-path, can make further saving material become possibility, thereby also reduce installed weight.Subtube with certain angle tilt to be installed in the steam discharge by-path be very beneficial because can significantly reduce the loss of flow velocity like this, the angle between subtube and the steam discharge by-path should be far smaller than 90 and spend.
Another kind of structural type of the present invention is that in a scope, at the jointing of a steam discharge by-path, perhaps the jointing of a subtube is installed the guide plate of a guiding steam discharge air-flow at least, so that with the steam discharge airflow diversion.The effect of this guide plate is, the steam discharge air-flow is shunted under the least possible situation of loss of pressure.Desirable situation is that loss of pressure is the same in any one steam discharge shunting.In the framework of another kind of structure of the present invention, can predict, the proportionate relationship between the steam discharge shunt volume, the proportionate relationship between the jointing of subtube is corresponding.For example, main blow-off line is divided into 5 steam discharge by-paths altogether, all should have the steam discharge of same quantity to flow through at each steam discharge by-path, therefore along the direction of steam discharge circulation, has 1/5 of Total piston displacement to flow through at first and steam discharge by-path joint.There is 1/4 of remaining displacement to flow through at second with steam discharge by-path joint.Be to have 1/3 and 1/2 of remaining displacement to flow through with steam discharge by-path joint accordingly the 3rd and the 4th.If the steam discharge by-path is divided into two subtubes, each subtube is flow rate distribution separately, and is corresponding, and the flow of steam discharge is the twice of subtube in the steam discharge by-path.
The direction that main blow-off line tilts flows cold air freely under condenser element become possibility, and by being installed on the lower pedestal, can reduce the cost that steel are built.And this equipment also is more convenient for visiting, because people can pass through below main blow-off line.
The present invention will be described in detail below by accompanying drawing:
Description of drawings
Fig. 1 and 2: the pipeline schematic representation of the blow-off line of the condenser of the cooling air of prior art,
The schematic representation of first kind and second kind mounting type of Fig. 3 .1 and 3.2 blow-off lines of the present invention,
Figure 4 and 5: the blow-off line schematic representation of central flow of steam,
Fig. 6 .1 and 6.2: concentrate two kinds of mounting types of the V font blow-off line of steam discharge discharging,
Fig. 7: another mounting type of blow-off line of the present invention,
The version of the mounting type of Fig. 8: Fig. 7.
Parameter symbol tabulation in the accompanying drawing:
The 1-blow-off line;
2-master's blow-off line;
3-steam discharge by-path;
The 4-spring supporting device;
The 5-blow-off line;
6-steam discharge by-path.
6 '-the steam discharge by-path,
6 '-the steam discharge by-path,
6 -steam discharge by-path;
6a-steam discharge by-path;
The 7-tie point,
The 7a-tie point;
The horizontally extending pipeline section of 8-;
The upwardly extending pipeline section of 9-;
10-master's blow-off line;
11-pendulum support device or polytetrafluoroethylene stainless steel slip leg,
11 '-support;
The 12-blow-off line;
The 13-blow-off line;
14-master's blow-off line;
15-central authorities blow-off line;
16-central authorities blow-off line;
17-master's blow-off line;
18-master's blow-off line;
The 19-blow-off line;
The 20-blow-off line;
21-master's blow-off line;
22-central authorities blow-off line;
The 23-subtube;
The 24-subtube;
The 25-guide plate;
The 26-guide plate;
The 27-guide plate;
The length direction zone of 28-25,26,27 leading portion;
The length direction zone of 29-25,26,27 back segment;
The 30-shunt conduit;
D
1-21 diameter;
D
2-21 diameter;
D
3The diameter of-6a;
The H-horizontal plane;
L-length;
The W-angle;
The W1-angle;
The W2-angle;
The W3-angle;
W3 '-angle;
W3 " angle;
The W4-angle;
Embodiment
What Fig. 1 showed is such technology: the main blow-off line 2 of blow-off line 1 and level, and a plurality of steam discharge by-paths 3 that extend vertically upward from main blow-off line.Place, end, upper end at steam discharge by-path 3 is a shunt conduit 30, near the condenser element that do not connect.The construction structure of blow-off line 1 has a shortcoming, and just each steam discharge by-path 3 is all very long, and need support accordingly with length.In order to remedy because the loss of the heat that brings of length change, just must make every section of steam discharge by-path 3 with nigh steel is not installed is equipped the position and be complementary.Such expense is low anything but.The length of pipeline is bigger in general, therefore just needs the more tonnage of transportation.The thing followed is expending also than higher on the mounting technique.
What adopt in the mounting type that Fig. 2 showed is such technology, the level cross-sectionn of main blow-off line 2 one than higher position on, so each steam discharge by-path 3 can be lacked.An advantage is arranged like this, steam discharge by-path 3 with regard to lighter, although still will compensate the loss of heat, the installation of steam discharge by-path and steel equipment position are complementary and want easier.In addition, need the corners of two 90 degree at least at main blow-off line, this is for the gas flow direction that substantially horizontal is extended is converted to Vertical direction, and then the gas of perpendicular flow is become substantially horizontal once more.The corner of these 90 degree even if do not use extra wheel blade corner, also can cause high flow velocity loss in right-angled corner inside.In the middle of bigger equipment, about 7 tons to 10 tons, they all are installed on the certain height quality of this class wheel blade corner greatly.High like this quality is a problem on earthquake safety.Because horizontally extending main blow-off line, comprise that the wheel blade corner has quite high weight when carrying out the transition to vertically extending main blow-off line, in the area that earthquake risk is arranged, just need extra supporting structure, when disturbing, vertical seismic plays a supporting role running into guaranteeing.
In the middle of this technology,, used spring supporting device 4, guaranteed simultaneously the main blow-off line that substantially horizontal is extended is supported in order to remedy the loss of the heat that brings owing to length change.But have a risk like this, that is exactly when running into vertical seismic, and the huge quality of main blow-off line and wheel blade corner can not support by the spring of spring supporting device, because this needs the shock absorbing apparatus of extra hydraulic cushion.Spring assembly on shock absorber and the spring supporting device gets up just to have formed the spring shock absorption arrangement, and the strength that it can stop earthquake to cause is delivered to the steamturbine that is connected with final main blow-off line 2 from main blow-off line 2.Spring supporting device 4 needs relative big expending with the combination of shock absorber, since closely related with the length of main blow-off line 2, so that the rising and the decline of the cross section of assurance and main blow-off line 2 are consistent.
Showed blow-off line 5 of the present invention in Fig. 3 .1, it is different with the applied technology of the installation method of Fig. 1 and Fig. 2, that is to say, main blow-off line and substantially horizontal H are the angle of corner W and extend along the steam discharge emission direction.Install in the example at this, the angle of corner W is 10 degree.One has 5 steam discharge by-paths 6 that extend vertically upward is connected with main blow-off line 10, and the cross section of pipeline constantly diminishes on the connection cross section 7 of each steam discharge by-path 6 simultaneously.This construction structure makes at the steam discharge by-path 6 on the right of figure obviously shortly than the left half of steam discharge by-paths 6 of figure, and this is because main blow-off line 10 continuous upwardly extending pipeline sections 9 are acclivitous, so the angle W1 of steam discharge by-path 6 is less than 90 degree.W1 is 80 degree in this installation example.It is little when therefore ducted resistance coefficient is 90 degree than angle.
Advantage is more in addition, forms angle W2 between the horizontal pipeline section 8 of main blow-off line 10 and upwardly extending pipeline section 9, and very little at the inner resistance coefficient that generates of this bent angle, it is just dispensable therefore the wheel blade bent angle to be installed.Therefore, when the length of pipeline diminishes, just can not use under the situation of wheel blade corner, remedy the loss of pressure, thereby steam discharge can flow into from the not near condenser element of the end of piebald horse pipeline 6 upper ends.
The upwardly extending pipeline section 9 of main blow-off line 10 be installed in pendulum support device 11 above.Pendulum supports 11 can be equilibrated at the length change that heating power causes in the upwardly extending pipeline section 9.Complicated spring supporting device and shock absorber are also unnecessary in the mounting type in this.Upwardly extending pipeline section 9 does not produce the strength that is not allowed to steamturbine in the middle of the earthquake of vertical effect, so the blow-off line in this invention 5 expending on building is smaller.Along with extending upward of main blow-off line 10, under the pedestal of the condenser element of cooling air, have entering of air.The visit property of this complete equipment can be more better.The mounting type that Fig. 1 showed need stay the road of non-constant width usually, because the overhead very near main blow-off line of installing 2 has blocked the road below it.And the installation method in this invention is that people can directly pass by below main blow-off line 10.The another one advantage is that the windward side of blow-off line 5 reduces, so windage reduces.Very clear and definite at the piping erection graph expression of Fig. 3 .1 and 3.2, that is exactly totally to it seems, and the windward side is than much smaller among Fig. 1 or Fig. 2.
Fig. 3 .2 also has some different with the installation method that Fig. 3 .1 is showed, its main distinction is each steam discharge by-path 6 ' with 6 " not vertical with horizontal plane, but it is upwardly extending to tilt.Install in the example at this, the inclination of the upwardly extending pipeline section 9 of main blow-off line and the angle of bent angle W are selected like this, and steam discharge by-path 6 of the most external end that promptly is arranged in and the upwardly extending pipeline section 9 of main blow-off line have same direction.In the mounting type shown in Fig. 3 .2, though the angle between corner W and the horizontal H is greater than the installation method among Fig. 3 .1, therefore the flow velocity that arrives the zone of transition of upwardly extending pipeline section 9 among Fig. 3 .1 in horizontal pipeline section 8 loses little, but the angle between bent angle W3 ' and the W3 " refer to upwardly extending pipeline section 9 and steam discharge by-path 6 ' and 6 ", they are all smaller, so each steam discharge by-path 6 on tie point 7 positions ' and 6 " no matter separately the loss of flow velocity has still all reduced in general widely.Because the cross section of the tie point 7 on the pipeline of upwardly extending pipeline section 9 also can be smaller, therefore can save material greatly, reduce weight, thereby realize less erection weight and installation cost.Here reduction self burden, wind-force burden, earthquake burden and pedestal burden have also been produced.
The parts of the upwardly extending pipeline section of between two tie points 7, installing 9 by support 11 ' support.Angle W3 ' and W3 " in principle can be inconsistent mutually.Particularly angle W3 ' and W3 " can on the most external end of upwardly extending pipeline section 9, diminish, until about zero degree, just as Fig. 3 .2 represents.
Also have blow- off line 12 and 13 in this technology, they have been sectioned out in Fig. 4 and Fig. 5.This installation method is to have differently significantly with the installation method of the vertical symmetry of Fig. 1 and Fig. 2, should have 4 to 12 to know pipeline here, and they are connected with central blow-off line 15 through the main blow-off line 14 that laterally runs through.In Fig. 5, the spring supporting device of having explained 4 is arranged also in Fig. 2.The shortcoming of this spring assembly was described in Fig. 1 and Fig. 2, was equally applicable to the installation method that Fig. 5 introduces.
Occurred central blow-off line 16 in the innovative mounting type that Fig. 6 .1 is introduced, from central blow-off line 16 direction opposite main blow-off line has mutually been arranged respectively: the main blow-off line 17 of Yan Shening and the main blow-off line 18 of extension to the right left.Main blow-off line 17 and main blow-off line 18 are installed in respectively on the support device 11, particularly on the spring supporting device.The advantage of this mounting type has illustrated that in the introduction of the mounting type that Fig. 3 .1 is showed these advantages are equally applicable to creative blow-off line 19.
In principle, pendulum support device 11 also can replace by the fixed support of a polytetrafluoroethylene stainless steel slip leg.
The mounting type that Fig. 6 .2 is showed is that with the different of mounting type that Fig. 6 .1 is showed it is big that the bent angle W between horizontal H and the main blow-off line 17,18 becomes.Should disappear in main blow-off line 17,18 at steam discharge by-path 6 last or end, this point has just determined the angular dimension of bent angle W, that is to say, and be the part of main blow-off line 17,18 on the degree among steam discharge by-path 6 of least significant end.The another one difference is, at the steam discharge by-path 6 that is arranged in main blow-off line 17,18 stage casings " is vertical with horizontal H unlike the mounting type that Fig. 6 .1 is showed, but tilt.Main blow-off line 17,18 and steam discharge by-path 6 " between angle represent with W .By comparing with the mounting type that Fig. 4 and Fig. 5 are showed, bent angle W is far smaller than 90 degree as can be seen, and also littler than the angle in the mounting type that Fig. 6 .1 showed.And, this mounting type use on shorter and therefore lighter and handier blow-off line 6 ', 6 " and 6 have so just reduced self burden, wind-force burden, earthquake burden and pedestal further and have born.Certainly, erection weight also is minimized.
What Fig. 7 showed is the mounting type of steam discharge by-path 20.In this manner, the angle W between main blow-off line 21 and the horizontal H is bigger than previously mentioned mode.Main blow-off line 21 is that direct and central blow-off line 22 is connected under the situation of horizontally extending medium tache not having.The selection of angle W also is in order to guarantee that the rear end of steam discharge by-path 6 or end can couple together with main blow-off line 21 smoothly.Because precipitous relatively the making progress of main blow-off line 21 in example is installed, therefore the steam discharge by-path 6 on the main blow-off line 21, part and the angle between the main blow-off line 21 that 6a extends vertically upward are smaller, thereby the loss of the flow velocity of the joint on the main blow-off line 21 7 is also smaller.The unique distinction of this mounting type is that steam discharge by-path 6,6a are divided into two subtubes 23,24, these two subtubes 23,24 again separately with from not near condenser be connected.Steam discharge by-path 6a extends up to joint 7a vertically upward from main blow-off line 21.At this tie point 7a place, tell a subtube 24 with angle W4, and the steam discharge by-path 6a that continues to extend vertically upward is with regard to last subtube 23.The appearance of subtube 24 makes needn't increase an extra steam discharge by-path, and subtube 24 will extend to main blow-off line 21 with precipitous angle always.The extra branch of blow-off line 21, or subtube, last and blow-off line has coupled together again.
Fig. 8 has amplified the part in the mounting type of Fig. 7 description, and the place different with the mounting type of front is tie point 7 and 7a, and they merge together with conductive metal sheet 25,26 and 27 separately.Conductive metal sheet 25,26 and 27 effect are according to the proportionate relationship shunting that is connected tie point 7,7a with steam discharge.In the mounting type of Fig. 7 and Fig. 8 displaying, condenser element is told four steam discharge by-paths altogether, for the discharging of steam discharge.Corresponding is that the displacement that flows through at each tie point place is the ratio according to 1: 1.By at main blow-off line 21, the perhaps inside of subtube 6a, and be mounting guiding board 25,26,27 just before tie point 7 and 7a, can make with the amount shunting and become simple.Main blow-off line 21, perhaps therefore the annular cross section of subtube 6a also will be divided into two semicircles.When main blow-off line 21, perhaps the cross section of subtube 6a goes out to depart from from annular cross section, will produce the five equilibrium on the area.Because conductive metal sheet 25,26 and 27 is such structures: no matter before each tie point 7 and 7a, still in the scope of tie point 7 and 7a, all realized the five equilibrium on the area.Importantly 7 with the scope of 7a in steam discharge flow in loss of pressure the same substantially, and exhaust steam flow is also by five equilibrium.
In the installation embodiment who shows, each guide plate 25,26,27 all be with certain angle configuration.There is certain length L in the length direction zone 28 of the leading portion of guide plate 25,26,27, main blow-off line 21 or subtube 6a tie point 7 and the diameter before the 7a be D1, D2, D3.At the intersection point of middle major axis that begins to locate to can be used as the subtube 6 that is connected with main blow-off line 21 accordingly, 6a of tie point 7 and 7a, or the intersection point of the steam discharge by-path 24 that is connected with subtube 6a of conduct.Can see that the length direction zone 28 of the leading portion of guide plate 25,26,27 continues to extend forward from these intersection points, certain angle just be arranged up to the length direction zone 29 of having arrived back segment.Be chosen such that to be exactly that to be implemented in the flow cross section in tie point 7 and 7a zone the same as much as possible big with the contact in the length direction zone 29 of back segment.
Claims (24)
1. the steam discharge discharge pipe of an apparatus of steam power plants, have a plurality of air-cooled condensers, one or two main blow-off lines (10,17,18), at least connect two steam discharge by-paths (6,6 ', 6 ", 6 , 6a) on main blow-off line, they are connected with condenser element separately; The cross section of described main blow-off line (10,17,18,21) with the tie point that is connected (7) of steam discharge by-path (6,6 ', 6 ", 6 , 6a) after; the cross section of pipeline diminishes, and forms an acclivitous bent angle (W) between the substantially horizontal (H) that main blow-off line (10,17,18,21) and steam discharge flow.
2. steam discharge discharge pipe according to claim 1 is characterized in that: described bent angle (W) should be spent in the scope of 60 degree 5.
3. steam discharge discharge pipe according to claim 2 is characterized in that: described bent angle (W) should be spent in the scope of 20 degree 10.
4. according to claim 1,2 or 3 described steam discharge discharge pipes, it is characterized in that: article one master's blow-off line (17) and second master blow-off line (18) should be that direction extends upward on the contrary, are connected with central blow-off line (16) together.
5. according to claim 1,2 or 3 described steam discharge discharge pipes, it is characterized in that: main blow-off line (10,17,18) is installed in the support (11 '), and support (11 ') is used for remedying because main blow-off line (10,17, the 18) length change that heating power causes.
6. steam discharge discharge pipe according to claim 4 is characterized in that: main blow-off line (10,17,18) is installed in the support (11 '), and support (11 ') is used for remedying because main blow-off line (10,17, the 18) length change that heating power causes.
7. steam discharge discharge pipe according to claim 5 is characterized in that: supporting (11 ') is pendulum support device or polytetrafluoroethylene stainless steel slip leg (11), and they can compensate the length change of main blow-off line (10,17,18).
8. steam discharge discharge pipe according to claim 6 is characterized in that: supporting (11 ') is pendulum support device or polytetrafluoroethylene stainless steel slip leg (11), and they can compensate the length change of main blow-off line (10,17,18).
9. according to claim 1,2,3,6,7 or 8 described steam discharge discharge pipes, it is characterized in that: described steam discharge by-path (6 ', 6 ", 6 ) is connected with main blow-off line (10,17,18); between have several angle bent angle (W ', W ", W ), main blow-off line is to be tilted to along the direction of gas flow.
10. steam discharge discharge pipe according to claim 4, it is characterized in that: described steam discharge by-path (6 ', 6 ", 6 ) is connected with main blow-off line (10,17,18); between have several angle bent angle (W ', W ", W ), main blow-off line is to be tilted to along the direction of gas flow.
11. steam discharge discharge pipe according to claim 5, it is characterized in that: described steam discharge by-path (6 ', 6 ", 6 ) is connected with main blow-off line (10,17,18); between have several angle bent angle (W ', W ", W ), main blow-off line is to be tilted to along the direction of gas flow.
12. steam discharge discharge pipe according to claim 9 is characterized in that: the terminal steam discharge by-path (6 ) of main blow-off line (10,17,18) should with the same direction of main blow-off line (17,18,21).
13., it is characterized in that according to claim 10 or 11 described steam discharge discharge pipes: the terminal steam discharge by-path (6 ) of main blow-off line (10,17,18) should with the same direction of main blow-off line (17,18,21).
14., it is characterized in that: have at least a steam discharge by-path (6a) to be divided into two subtubes (23,24) at least according to claim 1,2,3,6,7,8,10,11 or 12 described steam discharge discharge pipes.
15. steam discharge discharge pipe according to claim 4 is characterized in that: have at least a steam discharge by-path (6a) to be divided into two subtubes (23,24) at least.
16. steam discharge discharge pipe according to claim 5 is characterized in that: have at least a steam discharge by-path (6a) to be divided into two subtubes (23,24) at least.
17. steam discharge discharge pipe according to claim 9 is characterized in that: have at least a steam discharge by-path (6a) to be divided into two subtubes (23,24) at least.
18. steam discharge discharge pipe according to claim 13 is characterized in that: have at least a steam discharge by-path (6a) to be divided into two subtubes (23,24) at least.
19. steam discharge discharge pipe according to claim 14 is characterized in that: the sign of described blow-off line is to have at least a subtube (23) to be connected obliquely with steam discharge by-path (6a) with certain angle (W4).
20. according to claim 15,16,17 or 18 described steam discharge discharge pipes, it is characterized in that: the sign of described blow-off line is to have at least a subtube (23) to be connected obliquely with steam discharge by-path (6a) with certain angle (W4).
21. steam discharge discharge pipe according to claim 14, it is characterized in that: the tie point of steam discharge by-path (6,6 ', 6 ", 6 , 6a) (7; 7a) locate or subtube (23,24) locates to have at least a guide plate (25,26,27) so that with steam discharge discharging shunting.
22. according to claim 15,16,17,18 or 19 described steam discharge discharge pipes, it is characterized in that: the tie point of steam discharge by-path (6,6 ', 6 ", 6 , 6a) (7; 7a) locate or subtube (23,24) locates to have at least a guide plate (25,26,27) so that with steam discharge discharging shunting.
23. steam discharge discharge pipe according to claim 21 is characterized in that: (7,7a) proportionate relationship between is the same with being connected tie point on the shunt conduit (30) for the proportionate relationship between the steam discharge discharging bypass flow.
24. steam discharge discharge pipe according to claim 22 is characterized in that: (7,7a) proportionate relationship between is the same with being connected tie point on the shunt conduit (30) for the proportionate relationship between the steam discharge discharging bypass flow.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10330659A DE10330659B3 (en) | 2003-07-08 | 2003-07-08 | Steam drainage line for steam turbine power generation plant, with branch lines leading to air-cooled condensation elements tapped off from upwards inclined main steam drainage line |
| DE10330659.5 | 2003-07-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1576520A CN1576520A (en) | 2005-02-09 |
| CN100340743C true CN100340743C (en) | 2007-10-03 |
Family
ID=33482966
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100009290A Expired - Lifetime CN100340743C (en) | 2003-07-08 | 2004-01-15 | Exhaust steam line for steam plants |
| CNU200420005380XU Expired - Lifetime CN2695642Y (en) | 2003-07-08 | 2004-03-23 | Exhaust discharge pipe of steam power equipment |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200420005380XU Expired - Lifetime CN2695642Y (en) | 2003-07-08 | 2004-03-23 | Exhaust discharge pipe of steam power equipment |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US7168448B2 (en) |
| EP (1) | EP1642075B1 (en) |
| KR (1) | KR100739933B1 (en) |
| CN (2) | CN100340743C (en) |
| AT (1) | ATE348308T1 (en) |
| AU (1) | AU2004255669B2 (en) |
| DE (2) | DE10330659B3 (en) |
| EG (1) | EG24188A (en) |
| ES (1) | ES2277278T3 (en) |
| IL (1) | IL171512A (en) |
| MX (1) | MXPA05008679A (en) |
| RU (1) | RU2298750C2 (en) |
| WO (1) | WO2005005902A1 (en) |
| ZA (1) | ZA200506469B (en) |
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| CN104677133A (en) * | 2015-01-21 | 2015-06-03 | 北京龙源冷却技术有限公司 | Exhaust system and indirect air-cooling system |
| CN106705696A (en) * | 2017-01-18 | 2017-05-24 | 王国际 | Double-way steam condensation water parallel balance discharge machine |
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| BE1024229B1 (en) | 2017-10-31 | 2019-05-27 | Hamon Thermal Europe S.A. | Cooling unit, installation and process |
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Also Published As
| Publication number | Publication date |
|---|---|
| ES2277278T3 (en) | 2007-07-01 |
| CN2695642Y (en) | 2005-04-27 |
| EP1642075A1 (en) | 2006-04-05 |
| AU2004255669B2 (en) | 2007-05-24 |
| KR100739933B1 (en) | 2007-07-16 |
| ATE348308T1 (en) | 2007-01-15 |
| EG24188A (en) | 2008-10-08 |
| WO2005005902A1 (en) | 2005-01-20 |
| CN1576520A (en) | 2005-02-09 |
| DE502004002322D1 (en) | 2007-01-25 |
| EP1642075B1 (en) | 2006-12-13 |
| DE10330659B3 (en) | 2004-12-23 |
| WO2005005902A8 (en) | 2005-09-09 |
| US20050161094A1 (en) | 2005-07-28 |
| RU2005129703A (en) | 2006-02-10 |
| US7168448B2 (en) | 2007-01-30 |
| IL171512A (en) | 2011-06-30 |
| ZA200506469B (en) | 2006-08-30 |
| AU2004255669A1 (en) | 2005-01-20 |
| RU2298750C2 (en) | 2007-05-10 |
| MXPA05008679A (en) | 2005-10-05 |
| KR20060029279A (en) | 2006-04-05 |
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